I have a relative who went to London six months ago.
She was horrified and vowed never to return. She said it was too dangerous, as head choppers own it.
Over 3 million US citizens visit the UK every year, most of them passing through London at some point. If there were any serious risk of harm, don’t you think that with these numbers you would have heard about it by now? The probability of coming to harm on the streets of London is no greater than in any other Western city, and a good deal less than many.